Logic Masters Deutschland e.V.

• 6x6 Chaos Construction rules: Divide the grid into 6 orthogonally connected regions with 6 cells each. Place the digits 1-6 exactly once into every row, column, and region. It is up to the solver to determine where these regions are.
• Region Sum Lines: Blue lines in the grid are Region Sum Lines. Lines are split into segments by region borders. Within each individual line, the sum of the digits on each segment is the same. The sum of segments on different lines may or may not be equal.
• Region building: Each line is split into exactly 2 segments and each region is visited by a line.

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